SIA Ultra Watch C Black With Two Straps - Hk4

SIA Ultra Watch C Black With Two Straps - Hk4

Marsoni

M251S

$13.90

Get it in 3 business days with 1 day shipping. Friday, May 29

SIA Ultra Watch C Black With Two Straps - Hk4Memory: RAM: 640KB ROM: 2MB Flash: 128M Heart Rate SpO2: LC09A Waterproof: IP67 Compatible System: Android 5. 0 or iOS 9. 0 and above Screen Size and Type: 1. 43 inch AMOLED, 466466 BT: 5. 3 BT Battery Capacity: 250mAh Charging Way: Wireless Charging Charging Time: About 2 hours Battery Life: About 57 days of use, 1520 days standby

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So since they were listed as down alternative, I was interested to see if they had that artificially puffy feel to them. They do get puffed up really well after a day. And the fabric is cool and comfortable. I do feel like these have good quality stuffing and the cover feels nice. I'm a back sleeper and it's just the right amount of bulk under my neck. I usually bunch the pillow up a little bit there so there's a little more pressure under my neck but with these it just felt good to lay on it without having to bunch it up in any special way. So I would definitely recommend them. So far I'm really liking having these pillows.

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Reviewed in the United States on April 20, 2026

ScienceWriter

Birmingham, US

★★★★★ 5

Nice and Fluffy

Size: Standard

These "down alternative" pillows have been a winner for me. Came two to a package and once they have a couple of days our of the vacuum packaging are nice and fluffy with no noticable odor. Just the right amount of "spring" to them for my taste. Also don't overheat my face/neck as traditional down pillows sometimes have.

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Reviewed in the United States on March 21, 2026